ccw27
Joined: 13 Oct 2004
Posts: 292
Helped: 8
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 10 Dec 2004 11:24 Symmetrical Load Ring Oscillator Design |
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Can anyone offer me tips on how to size the transistors for the buffer stage shown, particularly the PMOS transistors because I am having a hard time keeping PMOS load in triode and PMOS diode in saturation.
I am trying to build a four stage ring oscillator. From my calculations I need at least a Gain of 1.4 in each delay cell and I am targeting an oscillating frequency of 250 MHz.
Any help or links or papers will be appreciated.
Thanks
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